Loading and stacking machine



De.zs,194s. -C, A CARLSON ETA-L 2,457,346

LOADING AND STACKING MACHINE Filed July 1, 1946 3 Sheets-Sheet l MANYDec. 28, 1948.

Filed July l, 1946 c. A. CARLSON ETAL LOADING AND STACKING MACHINE ssheets-sheet 2 136028 11948. c. A. CARLSON l-:rAL

' LOADING `AND- STAGKING MACHINE 3 Sheets-Sheet 3 Filed July 1, 1946INVENTOR Car/ mon Car/san Patented ec. 28, i948 LOADING AND STACKINGMACHINE Carl Anton Carlson and AlvieW. Bittner,

v Fort Dodge, Iowa Application July 1, 1946, Serial No. 680,714

This invention relates generally to loading machines and in particularto a tractor loading attachment for handling hay and like material.

An object of this invention is to provide an improved loading andstacking machine.

A further object of this invention is to provide a loading machine inwhich a rake, tiltably mounted on a pair of pivoted lifting arms, ismovable to a dumping position concurrently with an elevation of thelifting arms, and to a loading position when the lifting arms arelowered.

Yet another object of this invention is to provide a loading machine inwhich a rake, supported for tiltable movement on a pair of pivotedlifting arms, is movable to dumping and loading positions in response toa raising and lowering of the lifting arms, and adapted for pivotalmovement at any raised position of the lifting arms to increase thedumping angle thereof.

A still further object of this invention is to rovide a rake attachmentwhich is readily interchangable with a dirt or manure handling scoop-fina loading machine having a pair of pivoted lifting arms arranged atopposite sides of a portable frame.

Yet another object of this invention ls to provide a hay loading machinewhich is of a simple and rugged construction, and eiicient in operationto load hay for transport or stacking purposes.

A feature of this invention is found in the provision for a loadingmachine of a rake attachment which is interchangeable with a materialhandling scoop pivotally supported between a pair of pivoted liftingarms arranged at opposite sides of the portable frame of the loadingmachine. The attachment includes a pivoted frame adapted to be pivotallysupported at its rear end on the forward ends of the lifting arms andreleasably locked against pivotal movement in a longitudinally alignedposition with the lifting arms. A rake pivotally mounted adjacent theforward end of the pivoted frame has its rear end connected to one endof a cable, which is then extended upwardly over a rigid upright frame,carried on the pivoted frame rearwardly of the rake, and downwardly ofthe frame for connection of its opposite end with the portable frame ofthe loading machine. On raising and lowering of the lifting arms therake is concurrently moved to loading and dumping positions therefor,with the pivoted frame being releasable at any elevated position of therake to provide -an increased rake dumping angle for the rake.

3 Claims. (Cl. 214-440) Further objects, features and advantages of thisinvention will become apparent from `the following description whentaken in connection with the accompanying drawings in which:

Fig. 1 is a side elevational View of a loading machine showing the rakeattachment of this invention in assembly relation therewith;

Fig. 2 is afragmentary side elevation of the front portion of theassembly shown in Fig. l, showing the rake attachment in a changedposition;

Fig. 3 is a top plan view of the rake attachment;

Fig. 4 is a sectional View taken on the line 4-4 in Fig. 3.

Fig. 5 is -a fragmentary bottom perspective view of the rake attachment;and

Fig. 6 is a fragmentary front perspective view of theattachment with therake removed.

With reference to the drawings the rake attachment of this invention isillustrated in Fig'. 1 in assembly relation with a loading attachmentfor a farm tractor having a frame I0, a rear axle I I, rear tractionwheels I2 and steering wheels i3. A'pair of pivoted lifting arms`l'4(Figs. l and 3), arranged at opposite sides of the tractor, are pivotedat their rear ends at I6 'on the tractor rear axle II. The liftingy armsare raised and lowered by means including a pair of upright hydrauliccylinders I'I, positioned at opposite sides ofthe tractor between `thetractor frame Il] and an adjacent lifting arm I4. Cables` I8 areymovably supported intermediate their ends at the upper ends of pistonrods I9 for the cylinders Il, with one end of the cables I8 beingconnected at 2| to the lifting arms I4, and the opposite ends of thecables I8 being connected atv 22 to the tractor frame I0. Oil underpressure for operating the cylinders I'I,` to raise and lower thelifting arms I4, is supplied from an oil ypump unit (not shown) operatedfrom the tractor engine.

The loading machine thus far described is of a commercially availabletype usually provided with a scoop or bucket (not shown) pivoted onbolts 23 (Fig. 3) between vthe forward ends of the lifting arms I4. Acatch on the rear wall of the scoop, is releasably engageable with apivoted latch 24 pivotally supported on a frame structure, indicatedgenerally at 2E, connected between the forward-ends of the lifting armsI4. The latch 24 is adapted to be operated in a usual manner by thetractor operator. f

- The rake attachment of this invention (Figs. 5 ando) includes apivoted frame, designated gen-v erally as 25, having? a .pair oftransversely ein` tended frame members 21 and 28 arranged in a spacedparallel relation, with the member 21 being at a higher level than themember 28.

Welded to opposite ends of the frame members 21 for the brace members 3|being welded to the r under sides of the frame membersil..and.2l.vSecured to the inner sides of the plate members 29, and projectedforwardly from;the=.platemem bers, are arm extensions 32. `It iscontemplated that the arm extensions 32, andtheframe members 21 and 28be of a tubular or vpipe construction.

The pivoted frame 25 is pivotally supported: on the forward ends of thelifting arms I4 by the bolts .23 which are extended transversely lofthearmed 4.-and through .the box section members. t i Thectrame 25isheldfagainstpivotal movement, when' the l arm extensions. '32 l are insubstantial longitudinal alignment 'with the lifting armsy I4,byftheengagement of the .latch 24 with'an upright catchfmember 33carriedon the frame member 21.` :It is seen,therefore, that-whenthe latch-2d isengagement with-thecatch 33.that'the frame 25.constitutes a forward-extensionfor the lifting arms I4. On release of the latch 24 thepivoted frameis moved downwardly-.bythe actionof gravity forapurposewhich willappear later.

A rake, indicated generally as 35 (Figs. 1 and 5l includes Aa 4pair.of.transverse.longitudinally spaced base members 36 and 31forsupporting rake tines 38. The.back wall...39 of the .rake isofagenerally arcuateshape and..-curfves upwardly and forwardlyrfrom` the.basemember 31 ,.-so that .its upper end .40 terminatesat a position:substantially -above -the base ..member.36. .A .pair .of.oppositelyarranged brace. .members 4l are -connectedA between the.upper end .40 .of .the rake back walle and the forward base .member-.36.

.Secured to .the undercsides. of thextines, indicated as 38a..(Figs. .3vand 5),..and....faced .downwardly,.are anglemembers 42. As best appearsin.Fig. .5..the `forward rake `base.memberf36 is eut, .away .at the.tines 33a. to .accommodate the angle .members 42,. whichare welded to.adjacent parts `of. vthe basemember 3E.

The front ends of the arm extensions .32 ar pivotally supported on.bolts .43. which are suitably carried atthe forward endsfof theanglemembers 42.V :Ther-aka 35 is .thus-tiltably mounted onv the bolts43 .for-up and downpivotal .movement relative .to .the `pivoted .fr-.ame.25, Vwhen the.,latch. 24 is `.engaged with the. catch .33, .and .formovement withathe `pivoted frame 25, at .any moved position thereof,when the latch 24 isreleased.

Located rearwardly oftherake .is anupright frame 46,'of. asubstantially. A .-shape, havingits lowerend rigidly .securedto theAtransverse frame member 28of the pivoted frame I25. Thefframe 46 eis:ofr .van ...arcuate .shape and curves .forwardly and-,upwardly in asubstantially concentric .relationmith-.the yback wall. 391of .the.rake,when .the rake isina loadingwposition as illustrated in Fig. 1,4, and indottedlinesf-in-Fig; 1. Theframe 46 ex- .tends above the-top levelof therakebackwall 39 sol-.that itsupper :enden-is projected forwardly overthe rake. y

A.. cross.V br-ace-4&l forfthe .frame 4.46, Eis provided with ra. pairof .spaced lugs49 between-=which a pulleyf-Ifisrotatablysupported. .1Asecond pulley .a and from such end extends under the pulley 52, .overthe pulleys 5i and 51 and then downwardly across the front side of theframe 46 for connec- ;.'ti'on1oflits opposite end 5.6 with the free endof a Idownwardly extended projection 6| carried on therear rake'basemember 31 (Fig. 4) A brace member' B2' connects the projection 5I withthe fronur'ake base member 36.

In the operation of the loading machine of this invention .assume theliftingarmsl4/to'be in'their lowered positionsshown in Fig.-`fl=,-=witl'1 the rake 35 in a loading position andthe pivoted frame..-25 held against pivotal` movement byA the latch 24. The rake 35 isthen .loaded by 4ausual bucking operation, namely, Aby advancing .therake into the material to behandled.

With. the rakefloaded the hydraulic cylinders i1 are operated to elevatethe :lifting arms tldtand in .turn the .rake 35. .On-aniniti-al.elevation of the lifting -.arms i4 vto itheir. dotted Vline positionsillustrated .in Fig. 1,.'whichfrepresenta.a .rake elevation of about.-s-ixfeet, ther-ake remains substantially stationaryrelativeto.the-pivoted-fa'ame .When the elevation ofthe.-liftingarms-i4is continuedabove their .-dottedline .showing in Fig. l, the cable 58,byvirtueof .its-connection at 59 with theftractor `fra-me 1d, and withthe :rake 35 avt-theprojectionI-i, provides. for a' downward tiltingmovement of the tr-ake concurrently with the elevation'- of the liftingarms to a maximum tilted-position shown in full lines vin Fig; 1,"whichrepresents an velevated height: of' yabout twelve nto thirteen feet.'The tiltedf. positionhfthe `rake at its maximumelevationsis-snioient-to un'- load any hay orlike'materialrcarriedthereon @n alowering ozitheliftingearmsfldfthe rakeris movable by the act-lon of ,.gravity`against the 'cable 551 to itsunloading `posit-inn.

In starting a hay stack, or in the loadingxof @hay sling or' ai-"layrack itrmay benecessary or desirable tod-mhp the rake35 'priortoits movement. to aimaximmnaelevated position. I'For this purpose thelatch 241:is operated to 'release the pivoted frame L25. "With' releaseof .the pivoted. frame 25 the rake :is 'immediately dumped toapositionsuch that the 'titres-88 approach a position located in a*.vertical planel fas z illustrated in Fig. 2.

Thevdownwai'd pivotal'movementrof the frame 25, relative to the liftingarms f4, "is-limitedby the action of a pair 'of oppositely arrangedsnubbers St connected between the arms i4 and the frame 25 `(Figs. 2,3,24 and 6). Each snubber inciudes a bolt member 56 slidably 'extendedthrough a plate member 51 which is secured to they inner sideof anadjacent lifting arm 14 by a clamp device 58. A coil spring-169,Amounted about the .bolt 55, is maintainedincompression-.between therear-side.v of the plate membe1f-1--and-a nut 1l threadable onthe-rearend of theboltt. The forward .end of theibolt sisvpivotal-ly'connected atT 'wf-with the `V upperfvendfof can upwardly-.and rearwardlyextended bracket member 12.whi-chfis secured as by welding to the framemember 21 and a corresponding box section member 3|.

On release of the latch 24, therefore, the springs E9 are compressedwhereby the pivoted frame 25 is yieldably brought to a stop at a limiteddownward pivotally moved position. The rake and the pivoted frame 25 aremovable from their relative positions shown in Fig. 2, to their relativepositions shown in Fig. 4, on a low- -ering of the lifting arms I4.

From a consideration of the above description it is seen that theinvention provides a loading machine for handling hay and like materialwhich is of a simple and compact construction and in which the rake 35is moved to a dumping position in response to an elevation of thelifting arms I4. Likewise the rake 35 is movable by gravity to a loadingposition, concurrently with the lowering of the arms i4. The rakeattachment, including the rake 35 and the pivoted fram-e 25, is readilyinterchangeable with a pivoted manure scoop, associated with a pair ofpivoted lifting arms arranged at opposite sides of a usual farm tractorWhen the rak-e is raised to its maximum elevation, it automaticallydumps the material from the rake. It is apparent, of course, that therake 35 may be dumped at any elevated position of the lifting arms Il!on release of the pivoted frame 25 by the latch 24.

Although the invention has been described with respect to a preferredembodiment thereof it is to be understood that it is not to be solimited since changes and modifications can be made therein which areWithin the full intended scope of this invention as defined by theappended claims.

We claim:

1. In a loading and stacking machine having a pair of pivoted liftingarms arranged at opposite sides of a portable frame, a, rake tiltablymounted on said arms, an upright stationary frame on said arms locatedrearwardly of said rake, and inclined upwardly and forwardly such thatits upper end projects forwardly of the rear end of the rake, when therake is in a loading position, flexible means connected at one end tothe rear end of said rake and extended upwardly over said frame and thendownwardly below said frame for connection at its opposite end with saidportable frame, and means including a pulley at the upper end of saidupright frame for movably supporting said flexible means.

2. A loading machine comprising a, portable frame having a pair ofpivoted lifting arms arranged at opposite sides thereof, a forwardextension pivotally supported on said lifting arms,

longitudinal alignment with said lifting arms, a rake tiltably mountedon said extension, an upright frame on said extension located rearwardlyof said rake, pulleys spacedV longitudinally of said upright frame. aflexible means movably supported on said pulleys having one end attachedto said rake and an opposite end attached to said portable frame forprogressively tilting said rake as said lifting arms are raised, means`for releasing said locking means to provide for a dumping of said rakeat any moved position of said lifting arms, and means for limiting thedownward pivotal movement of said forward extension on release of saidlocking means.

3. A hay loading and stacking attachment for a loading machine having aportable frame and a pair of pivoted lifting arms arranged at oppositesides of said portable frame, comprising a pivoted frame extendedforwardly of said lifting arms and pivotally connected at its rear endon said arms, means for releasably locking said pivoted fram-e againstpivotal movement in a longitudinally aligned position with said liftingarms, a rake tiltably mounted adjacent the Lt'orward end of said pivotedframe, an upright frame on said pivoted frame located rearwardly of saidrake, flexible means connected at one end to the rearend of said rakeand extended upwardly over said frame and then downwardly below saidframe for connection of its opposite end `with said portable frame,means on said upright frame for movably supporting said flexible means,said rake, through the instrumentality of said upright frame andflexible means, being automatically tilted to a dumping position as saidlifting arms are moved to a fully raised position therefor, and manuallyactuated means for releasing said locking means to provide for a dumpingof' said rake at any raised position of said liftingarms.

CARL ANTON CARLSON.

ALVIE W. BITTNER.

REFERENCES CITED The following references are of recordv in the nl@ ofthis patent:

UNITED STATES PATENTS Number Name Date 1,733,969 Knapp, Jr Oct. 29, 19292,298,200 Court Oct. 6, 1942 2,341,945 Rabon Feb. 15, 1944 2,394,830Woodin Feb. 12, 1946 2,398,119 Sauder Apr. 9, 1946 2,413,097 Barker Dec.24, 1946

